| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_ARM64_FRAME_CONSTANTS_ARM64_H_ |
| #define V8_ARM64_FRAME_CONSTANTS_ARM64_H_ |
| |
| #include "src/base/macros.h" |
| #include "src/frame-constants.h" |
| #include "src/globals.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // The layout of an EntryFrame is as follows: |
| // |
| // slot Entry frame |
| // +---------------------+----------------------- |
| // 0 | bad frame pointer | <-- frame ptr |
| // | (0xFFF.. FF) | |
| // |- - - - - - - - - - -| |
| // 1 | stack frame marker | |
| // | (ENTRY) | |
| // |- - - - - - - - - - -| |
| // 2 | stack frame marker | |
| // | (0) | |
| // |- - - - - - - - - - -| |
| // 3 | C entry FP | |
| // |- - - - - - - - - - -| |
| // 4 | JS entry frame | |
| // | marker | |
| // |- - - - - - - - - - -| |
| // 5 | padding | <-- stack ptr |
| // -----+---------------------+----------------------- |
| // |
| class EntryFrameConstants : public AllStatic { |
| public: |
| // This is the offset to where JSEntry pushes the current value of |
| // Isolate::c_entry_fp onto the stack. |
| static constexpr int kCallerFPOffset = -3 * kSystemPointerSize; |
| static constexpr int kFixedFrameSize = 6 * kSystemPointerSize; |
| }; |
| |
| class ExitFrameConstants : public TypedFrameConstants { |
| public: |
| static constexpr int kSPOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(0); |
| DEFINE_TYPED_FRAME_SIZES(1); |
| static constexpr int kLastExitFrameField = kSPOffset; |
| |
| static constexpr int kConstantPoolOffset = 0; // Not used |
| }; |
| |
| class WasmCompileLazyFrameConstants : public TypedFrameConstants { |
| public: |
| static constexpr int kNumberOfSavedGpParamRegs = 8; |
| static constexpr int kNumberOfSavedFpParamRegs = 8; |
| |
| // FP-relative. |
| static constexpr int kWasmInstanceOffset = TYPED_FRAME_PUSHED_VALUE_OFFSET(1); |
| static constexpr int kFixedFrameSizeFromFp = |
| // Header is padded to 16 byte (see {MacroAssembler::EnterFrame}). |
| RoundUp<16>(TypedFrameConstants::kFixedFrameSizeFromFp) + |
| kNumberOfSavedGpParamRegs * kSystemPointerSize + |
| kNumberOfSavedFpParamRegs * kDoubleSize; |
| }; |
| |
| class JavaScriptFrameConstants : public AllStatic { |
| public: |
| // FP-relative. |
| static constexpr int kLocal0Offset = |
| StandardFrameConstants::kExpressionsOffset; |
| |
| // There are two words on the stack (saved fp and saved lr) between fp and |
| // the arguments. |
| static constexpr int kLastParameterOffset = 2 * kSystemPointerSize; |
| |
| static constexpr int kFunctionOffset = |
| StandardFrameConstants::kFunctionOffset; |
| }; |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_ARM64_FRAME_CONSTANTS_ARM64_H_ |